A 25-year-old woman with suspected SLE has a speckled pattern on an ANA screen. Which action should be taken next?

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Study for the Stevens Immunology-Serology Test. Explore flashcards and multiple choice questions with detailed explanations and hints. Get exam ready now!

Multiple Choice

A 25-year-old woman with suspected SLE has a speckled pattern on an ANA screen. Which action should be taken next?

Explanation:
A broad ANA screen is highly sensitive but not specific for SLE, so a speckled pattern signals the possibility of several different autoantibodies rather than a definite diagnosis. The appropriate next step is to perform assays for specific autoantibodies to identify exactly which nuclear antigens are targeted. Testing for specific ANAs such as anti-dsDNA, anti-Sm, anti-RNP, and SSA/SSB provides precise information that helps confirm or exclude SLE and differentiates it from other autoimmune conditions. A positive ANA pattern alone does not prove lupus, and repeating the test won’t add diagnostic value at this stage.

A broad ANA screen is highly sensitive but not specific for SLE, so a speckled pattern signals the possibility of several different autoantibodies rather than a definite diagnosis. The appropriate next step is to perform assays for specific autoantibodies to identify exactly which nuclear antigens are targeted. Testing for specific ANAs such as anti-dsDNA, anti-Sm, anti-RNP, and SSA/SSB provides precise information that helps confirm or exclude SLE and differentiates it from other autoimmune conditions. A positive ANA pattern alone does not prove lupus, and repeating the test won’t add diagnostic value at this stage.

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